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#include "stdafx.h"
#include <algorithm>
#include <vector>
#include <set>
#include <conio.h>
#include <iostream>
#include <numeric>
#include <limits>
#include <iostream>
#include <string>
using std::cin;
using std::cout;
using std::endl;
 
void reverseit(char array[],int no)
{ char c; int len,x, mid=0;
if(no==0)
{for(len=0,x=0; array[x] !='\x0';len++,x++); }
else
{ len = 0; len = no; }
mid = (len-1)/2;
for(int i=0,j=len-1; i <=mid; i++,j--)
{ c = array[i];
array[i] = array[j];
array[j] = c;
}
cout << endl<<array;
}
int _tmain(int argc, _TCHAR* argv[])
{
    char data[80]; int nos=0;
    cout <<"enter string to reverse it  "; cin.getline(data,80);
    reverseit(data,0);
    cout <<endl<<"enter string to reverse it  "; cin.getline(data,80);
    cout <<endl<<"enter Nos to reversed "; cin >>nos;
    reverseit(data,nos);
    _getch();
    return 0;
}

#include <algorithm>
 
    char chArr[sizeof("abcdef")];
    ::strcpy (chArr, "abcdef");
    std::reverse (chArr, chArr+::strlen ("abcdef"));

// my_tests.cpp : Defines the entry point for the console application.
// 
#include "stdafx.h"
#include <algorithm>
#include <vector>
#include <set>
#include <conio.h>
#include <iostream>
#include <numeric>
#include <limits>
#include <iostream>
#include <string>
using std::cin;
using std::cout;
using std::endl;
 
void reverseit(char array[],int no)
{ char c; int len,x, mid=0;
if(no==0)
{for(len=0,x=0; array[x] !='\x0';len++,x++); }
else
{ len = 0; len = no; }
mid = (len-1)/2;
for(int i=0,j=len-1; i <=mid; i++,j--)
{ c = array[i];
array[i] = array[j];
array[j] = c;
}
cout << endl<<array;
}
int _tmain(int argc, _TCHAR* argv[])
{
    char data[80]; int nos=0;
    cout <<"enter string to reverse it  "; cin.getline(data,80);
    reverseit(data,0);
    _getch();
    return 0;
}

void Reverse ( char s[ ] ){
     char Ch;
     int  i, j;
     for (i=0, j=strlen(s) - 1; i<j; i++, j--){
            Ch = s[i]; s[i] = s[j]; s[j] = Ch; 
     }
}